I hunted moose with a receiver sight minus the insert for 40 years and didn't feel handicapped. As my eyes aged and I sought a lighter rifle, I opted for a 3X Leupold which has sufficed for 20 years.
Get the best clarity light gathering scope you can afford. Low light is more important than magnification in my opinion for moose. I am partial to the better Zeiss optics.
Thanks to everyone for the help but I'm putting this on hold. Got a text from a kodiak guy and he's got a cancelation for a bear I'm taking for 2 months from now . Guns gonna have to keep the glass it's got and I gotta spend some time behind it among a bunch of other scrambling